package-check-signature

package-check-signature is a variable defined in `package.el'.
Its value is

allow-unsigned

• This variable may be risky if used as a file-local variable.

Documentation:
Non-nil means to check package signatures when installing.
The value `allow-unsigned' means to still install a package even if
it is unsigned.

This also applies to the "archive-contents" file that lists the
contents of the archive.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.4 of Emacs.